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Graphene oxide modified orderly porous zinc oxide composite film and preparation method thereof

A technology of porous zinc oxide and composite film, applied in zinc oxide/zinc hydroxide, nanotechnology for materials and surface science, nanotechnology, etc. production and other problems, to achieve the effect of good gas sensing or catalytic performance, simple preparation method and easy mass production

Inactive Publication Date: 2016-10-26
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this graphene-modified porous titanium dioxide composite film has greatly improved the electrochemical properties of the electrode, there are shortcomings in the preparation method. First, the product does not have the unique photoelectric and photochemical properties of nano-zinc oxide. Secondly, the preparation method can neither obtain the product of graphene-modified zinc oxide, but also has the defects of complicated preparation process, high requirements for equipment, easy pollution of the environment, and difficult mass production

Method used

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  • Graphene oxide modified orderly porous zinc oxide composite film and preparation method thereof
  • Graphene oxide modified orderly porous zinc oxide composite film and preparation method thereof
  • Graphene oxide modified orderly porous zinc oxide composite film and preparation method thereof

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Embodiment 1

[0036] The concrete steps of preparation are:

[0037] Step 1, first mix the 0.1g / L graphene oxide aqueous solution and the 0.2mol / L zinc salt aqueous solution at a volume ratio of 1:23; wherein the zinc salt is zinc acetate to obtain a precursor solution . After placing the single-layer colloidal crystal template in the precursor solution, use the substrate to pick it up; wherein, the diameter of the colloidal spheres constituting the single-layer colloidal crystal template is 1000nm, and the substrate is a flat insulator. A substrate with a single-layer colloidal crystal template loaded with a precursor solution on its surface.

[0038] Step 2, first put the substrate covered with the single-layer colloidal crystal template with the precursor solution on the surface and bake it at 50 ° C for 12 hours to obtain the substrate covered with the single-layer colloidal crystal template with the precursor solution on the surface . Then place the substrate covered with the single...

Embodiment 2

[0040] The concrete steps of preparation are:

[0041] Step 1, first mix the 0.5g / L graphene oxide aqueous solution and the 0.2mol / L zinc salt aqueous solution at a volume ratio of 1:24; wherein the zinc salt is zinc acetate to obtain a precursor solution . After placing the single-layer colloidal crystal template in the precursor solution, use the substrate to pick it up; wherein, the diameter of the colloidal spheres constituting the single-layer colloidal crystal template is 1000nm, and the substrate is a flat insulator. A substrate with a single-layer colloidal crystal template loaded with a precursor solution on its surface.

[0042] Step 2, first place the substrate covered with the single-layer colloidal crystal template with the precursor solution on the surface and bake it at 55°C for 9 hours to obtain the substrate covered with the single-layer colloidal crystal template with the precursor solution on the surface . Then place the substrate covered with the single-...

Embodiment 3

[0044] The concrete steps of preparation are:

[0045] Step 1, first mix the 1g / L graphene oxide aqueous solution and the 0.2mol / L zinc salt aqueous solution at a volume ratio of 1:25; wherein the zinc salt is zinc acetate to obtain a precursor solution. After placing the single-layer colloidal crystal template in the precursor solution, use the substrate to pick it up; wherein, the diameter of the colloidal spheres constituting the single-layer colloidal crystal template is 1000nm, and the substrate is a flat insulator. A substrate with a single-layer colloidal crystal template loaded with a precursor solution on its surface.

[0046] Step 2, first place the substrate covered with the single-layer colloidal crystal template with the precursor solution on the surface and bake it at 60°C for 6 hours to obtain the substrate covered with the single-layer colloidal crystal template with the precursor solution on the surface . Then place the substrate covered with the single-layer ...

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Abstract

The invention discloses an ordered porous zinc oxide composite film modified by graphene oxide and a preparation method thereof. The composite film is ordered porous zinc oxide decorated with graphene oxide nanosheets, wherein the ordered porous zinc oxide has a pore diameter of 50-4900nm and a pore wall thickness of 10-100nm, which is composed of zinc oxide particles with a particle size of 5-50nm Composition; the method is to firstly mix the graphene oxide aqueous solution and the zinc salt aqueous solution to obtain the precursor solution, then place the single-layer colloidal crystal template in the precursor solution, use the substrate to pick it up, and obtain the surface covered with it. Attach the substrate of the single-layer colloidal crystal template of the precursor solution, and then dry the substrate covered with the single-layer colloidal crystal template of the precursor solution on the surface, and then place it in a protective atmosphere for annealing , to obtain the target product. It can be easily and widely commercialized in the fields of photocatalysis, sensors, and electronic devices.

Description

technical field [0001] The invention relates to a composite film and a preparation method thereof, in particular to an ordered porous zinc oxide composite film modified by graphene oxide and a preparation method thereof. Background technique [0002] Graphene oxide, which has good hole performance, mechanical strength and stability, is an excellent material for transporting electrons, and its large specific surface area also makes it have many important application values ​​in many fields. At present, a single nanomaterial can no longer meet people's needs for advanced functional materials, and nanocomposites have attracted widespread attention. For example, a graphene-modified Preparation method of porous titanium dioxide composite membrane. The product mentioned in the patent application for this invention is the surface of porous titanium dioxide modified with graphene; balls and calcined to obtain a porous titanium dioxide film, and then cyclic voltammetric deposition ...

Claims

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Application Information

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IPC IPC(8): C01G9/02C01B31/04B82Y30/00
CPCC01G9/02C01P2002/72C01P2002/82C01P2004/03C01P2004/04C01P2004/80
Inventor 段国韬苏星松许宗珂蔡伟平
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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